Intro
                 8X
G ------------ | ----------------- | --7 |
D ------------ | -0-53-2-0-0------ | --- |
A ----5--5--5- | -----------3-0-03 | 5-- | 5-5 ... and so on.
E ---5--5--5-- | ----------------- | --- |

While singing:
Markus is frickin' quite a lot here. He varies the bass part freely.
I think there is no exact riff, only a basis to play on. I just write
down some standard patterns. Feel free to write something like this on
your own. Can't be wrong :)

                    1.)                2.)
G|:----------------|----------------:|------75-75------|      
D|:----------------|----------------:|----35-----75----|
A|:5--505-3------3-|5-5505-3-------3:|5035---------7535|      
E|:---------0123---|---------0-1-23-:|-----------------|

or so:
                    1.)                2.)
G|:----------------|----------------:|-------5-75------|      
D|:----------------|----------------:|-----------75----|
A|:5--505-3------3-|5-5505-3-------3:|5-5505-------7505|      
E|:---------0123---|---------0-1-23-:|-----------------|

The small bass riff before the "And in my cabin ..."

G|: ------------------------------- :|
D|: ----6-5---3-------------------- :|
A|: 5-0-----------5---0-3---2---1-0 :|
E|: ------------------------------- :|

The part "And in my cabin ..."
D, B-flat:
something like this ...
G| -----7---|-------------------------|
D| ----7-7-7|8---8---10-8--7----------|
A| 5-5----5-|------------------10-8-7-|
E| ---------|-------------------------|

Sorry, but I don't know the F-maj and a-min part right now ...

The silent part is something like this:

8X
G|:----------------------------|-------------------:|
D|:--------12------------------|-------------------:|
A|:5----12----12--------------3|--(3)--------0-2-3-:|
E|:--------------10(slide to)3-|-(3)-0-1-2-3-------:|

The solo part is not transcriptable. Here Markus is frickin' on D maj and
C maj 2 measures each. Sometimes he uses the half riff (see above) from the
silent part. But later it seems to me that he just improvizes.
I play something like this:

G|:------------------------------|------------------------------:|
D|:------------------------------|------------------------------:|
A|:5-5----5-5-----5-5-----5-5----|3-3----3-3----3---------0-2-3-:|
E|:-----5-------5-------5------3-|-----3------3---0-1-2-3-------:|

Later I play something like this (ME, not Markus :) ):

Dmaj:
G|----------------------------------|----7-9-7-----------------------|
D|--------4---4-5---5-6---6-7---7---|7-9-------9-7-5---7-5---7-5-----|
A|5---5-5---------------------------|----------------7-----7-----7---|
E|----------------------------------|--------------------------------|

Rhythm
*   * * *   * *   * *   *   *   |* * * * * * * * * * * * * * *
1...+...2...+...3...+...4...+...|1...+...2...+...3...+...4...+...

Cmaj:
G|----------------------------------|-------------------------------|
D|----------------------------------|-8-10---8----------------------|
A|--------7---7-8---8-9---10---10---|------------10---8-7-8-7-------|
E|8---8-8---------------------------|---------------------------8---|

Rhythm:
*   * * *   * *   * *   *   *   | * *   *   *   * * * *   *
1...+...2...+...3...+...4...+...| 1...+...2...+...3...+...4...+...